Loopgraafmortier Duits model H20 (Leichter Minenwerfer n/A) kaliber 7,58 cm met getrokken loop, op grondplaat met radaffuit Postcards from the trenches : images from the First World War / introd. by Andrew Roberts Made in the trenches : composed entirely from articles and sketches contributed by soldiers / Frederick Treves ... and George Goodchild U.S. Knife Model 1918 MK1 Trench van Edward Degener